添加简单开屏

　　添加单纯背景开屏，代码如下：

　　采用了百度ssp的sdk;

import android.app.Activity;import android.content.Intent;import android.content.res.Configuration;import android.os.Bundle;import android.util.Log;import android.widget.RelativeLayout;import com.baidu.mobads.SplashAd;import com.baidu.mobads.SplashAdListener;/** * 实时开屏，广告实时请求并且立即展现 */public class SplashAdActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.splash);        // adUnitContainer        RelativeLayout adsParent = (RelativeLayout) this.findViewById(R.id.adsRl);        // the observer of AD        SplashAdListener listener = new SplashAdListener() {            @Override            public void onAdDismissed() {                Log.i("RSplashActivity", "onAdDismissed");                jumpWhenCanClick(); // 跳转至您的应用主界面            }            @Override            public void onAdFailed(String arg0) {                Log.i("RSplashActivity", "onAdFailed");                jump();            }            @Override            public void onAdPresent() {                Log.i("RSplashActivity", "onAdPresent");            }            @Override            public void onAdClick() {                Log.i("RSplashActivity", "onAdClick");                // 设置开屏可接受点击时，该回调可用            }        };        String adPlaceId = "000000"; // 重要：请填上您的广告位ID，代码位错误会导致无法请求到广告        new SplashAd(this, adsParent, listener, adPlaceId, true);    }    /**     * 当设置开屏可点击时，需要等待跳转页面关闭后，再切换至您的主窗口。故此时需要增加canJumpImmediately判断。 另外，点击开屏还需要在onResume中调用jumpWhenCanClick接口。     */    public boolean canJumpImmediately = false;    private void jumpWhenCanClick() {        Log.d("test", "this.hasWindowFocus():" + this.hasWindowFocus());        if (canJumpImmediately) {            this.startActivity(new Intent(SplashAdActivity.this, MainActivity.class));            this.finish();        } else {            canJumpImmediately = true;        }    }    @Override    protected void onPause() {        super.onPause();        canJumpImmediately = false;    }    /**     * 不可点击的开屏，使用该jump方法，而不是用jumpWhenCanClick     */    private void jump() {        this.startActivity(new Intent(SplashAdActivity.this, MainActivity.class));        this.finish();    }    @Override    protected void onResume() {        super.onResume();        if (canJumpImmediately) {            jumpWhenCanClick();        }        canJumpImmediately = true;    }}

　　新建布局文件，启动Activity改为新建的那个。